Help me please

I’m so lost and not sure what to do. My 10 year old step daughter is going through puberty and is having some self esteem issues and told me last night that a year or 2 ago she really wanted to commit suicide and still has the thought from time to time. She told last night and it literally killed me inside the fact that she told me makes me so happy that she is comfortable but I don’t know what to do. I ensured her that we are going to get through this and allowed her to cry it out. I told my husband and she said she doesn’t want to tell her mom because she isn’t comfortable. I did reach out to a therapist for her just waiting on her appt.

Please any help or words of wisdom please share.